I want to program the P89C51RD+IN using a parallel programming algorithm. The data sheet from Philips describes the serial programming method in some detail, but does not include a description of the parallel algorithm. I have built a programmer for Atmel's AT89C51, 52, ... and I am not sure I can use it with the Philips MCU without changes.

I have sent an e-mail to Philips requesting the algorithm but I have received no reply.

Where can I find the algorithm for the P89C51RD+IN?.

Thank you.